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factor Va + factor Xa -> Va:Xa complex (prothrombinase)

Stable Identifier
Homo sapiens
Locations in the PathwayBrowser

Factors Va and Xa associate on a membrane surface to form a complex in which the activity of factor Xa on prothrombin is greatly increased (Mann et al. 1988). The presence of negatively charged phospholipid in the membrane greatly facilitates this process, a feature that may contribute to its localization, as such phospholipids are normally on the cytosolic face of the plasma membrane (Devaux 1992), but could be exposed to the extracellular space following platelet activation or mechanical injury to endothelial cells.

Literature References
PubMed ID Title Journal Year
3052293 Cofactor proteins in the assembly and expression of blood clotting enzyme complexes Annu Rev Biochem 1988
Participant Of
Orthologous Events